Dumping grate for furnaces



April. 22 924. 1,491,255

L. .BUDD

DUMPING GRATE FOR FURNACES Filed March 26. 1923 2 Sheets-Sheet I #644, attornpq April 22 1924. 1,491,255

L.BUDD

DUMPING GRATE FOR FURNACES Filed March 26. 1923 2 Sheets-Sheet 2 Des tefB 2x156 Patented Apr. 22, 1924.

YES

w yr f r-r e id ll firemen LESTER BUDID, 0F PHILADELPHIA, PENNSYLVANIA.

PUMPING: GRATE FOE FURNACES.

Application filed March as, 1923 To all whom it may concern: A

Be it known that I, LESTER Been, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Dumping Grates for Furnaces, of which the following is a specification.

In dumping grates as usually constructed, with the dumping bars extending rearwardly from their axes, there is a tendency of the clinkers to adhere to the bridge wall and to close or clog the dumping passage.

The objects of my invention are to provide an improved dumping grate the action of which will insure opening the dumping passage throughout its entire area; to provide simple means for detachably connecting the dumping bars to the dumping axle, and to provide a dumping grate so constructed that the parts will have a maximum exposure to the air coming from the ash pit thereby prolonging the life of the grate.

These objects, and other advantageous ends which will be described hereinafter, I

attain in the following manner, reference being had to the accompanying drawings in which Figure 1 is a side elevation of. a grate structure partly broken away showing the dumping bars in closed position,

Figure 2 a like View showing the dumping bars in open position.

Figure 3 a fragmentary enlarged plan view of the dumping grate,

Figure 4 an inverted plan view of the same,

Figure 5 a sectional View on the line 5-5 of Figure 1,

Figure 6 a perspective View showing how the dumping grate is assembled, and

Figure 7 an inverted perspective view of one of the dumping bars.

In the drawings, 1 indicates the side wall of a furnace, 2 the bridge wall, 3 the side bearing bars of an inclined grate frame, t a bar, preferably of rectangular shape, rockably mounted in the side bearing bars parallel with and adjacent to the bridge wall and hereinafter called the dumping axle, 5 a crank arm secured to one end of the dumping axle, 6 a rod pivotally connected with the crank arm, extending slidably through the front wall of the furnace and provided with a handle by which it may be Serial 2T0. 627,825.

reriprocated, and 7 dumping bars having long arms 8 extending forwardly and short arms 9 extending rearwardly to the bridge wall, the long arms and the short arms being in substantially the same transverse longitudinal plane. These bars are provided with downwardly ex tending arms 10 adapted to loosely embrace the sides of the axle lhe upper part of the space between the arms is bridged by a web 11, narrow compared to the width of the bar, adapted to rest on the upper face of the dumping axle and provide air passages 12 over the axle on either side of the web. The dumping bars are also provided, upon each side, with recesses 13 adapted to permit passage of air upwardly between the bars. The upper surfaces of the dumping bars, at the rear end, are concaved to provide a chopping edge ld adapted to engage with and remove clinker-s which may adhere to the bridge wall.

By placing the dumping axle adjacent the bridge Wall, with the long arms of the dumping bars extending forwardly therefrom and the short arms having their upper edges in contact with the bridge wall, rocking the axle will disengage clinkers adhering to the bridge wall and clean a dumping passage somewhat removed from that wall. This action is facilitated by providing the rear end of the dumping bars with a chopping edge.

By attaching the dumping arms to the axle in the manner described the dumping grate is easily assembled, any part may be easily detached and allowance may be made for expansion and contraction without impairing the efliciency of the grate.

By providing the air passages 12 and 13 air from the ash pit has access so far as possible to all parts of the dumping grate thus prodding for uniformity of contraction and expansion and increasing the durability of the grate.

While I have described my invention as taking a particular form, it will be understood that the various parts of my invention may be changed without departing from the spirit of the invention and hence I do not limit myself to the precise construction set forth but consider that I am at liberty to make such changes and alterations as fairly come within the scope of the appended claims.

Having thus described my invention, what 1 claim as new and desire to secure by Letters Patent is 1. In a dumping grate, a dumping axle rockably mounted adjacent the bridge wall and having a fiat upper surface; dumping bars extending therefrom and provided with downwardly extending spaced arms adapted to embrace the sides of the axle; webs bridging the upper part of the space between the arms and adapted to ride upon the upper surface of the axle, and means for rocking the axle to open and close the gate.

2. In a dumping grate, a rectangular dumping axle rockably mounted adjacent the bridge wall and having a fiat upper sur face; dumping bars extending therefrom and provided with downwardly extending spaced arms adapted to loosely embrace the sides of the axle; webs bridging the upper part of the space between the arms and adapted to ride upon the upper surface of the axle, and means for rocking the axle to open and close the gate.

3. In a dumping grate, a dumping axle rockably mounted adjacent the bridge wall and having a fiat upper surface; dumping bars extending therefrom and provided with downwardly extending spaced arms adapted to embrace the sides of the axle; webs bridging the upper part of the space between the arms and adapted to ride upon the upper surface of the axle, the webs being narrow compared with the width of the bars, there by providing air passages over the axle, and means for rocking the axle to open and close the gate.

4. In a dumping grate, a dumping axle rockably mounted adjacent the bridge Wall; dumping bars having long arms extending forwardly and short arms extending rearwardly from the a le, the arms of each bar being in substantially the same transverse longitudinal plane, and the short arms hav ing at their rear edge upwardly extending chopping edges.

5. In a dumping grate, a dumping axle rockahly mounted adjacent the bridge wall and having a flat upper surface; dumping bars extending t ierei'roni and provided with downwardly extending spaced arms adapted to embrace the sides of the axle; webs bridging the upper part of the space between the arms and adapted to ride upon the upper surface of the axle, the dumping bars hav ing recesses in their sides adapted to permit passage of air, and the webs being narrow compared with the width of the bars thereby providing air passages over the axle.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' LESTER BUDD.

H. MURPHY, C. CHARLTON. 

